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1313203123210 = 251175715770423
BaseRepresentation
bin10011000111000001000…
…000010111010000001010
311122112121101100121100111
4103013001000113100022
5133003414444420320
62443135512224534
7163606253242066
oct23070100272012
94575541317314
101313203123210
11466a20a23070
1219261109b14a
1396ab05a7b94
14477b8caaaa6
152425d0eba5a
hex131c101740a

1313203123210 has 32 divisors (see below), whose sum is σ = 2582059980672. Its totient is φ = 476897561280.

The previous prime is 1313203123159. The next prime is 1313203123217. The reversal of 1313203123210 is 123213023131.

It is a super-4 number, since 4×13132031232104 (a number of 50 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (1313203123217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7801942 + ... + 7968481.

It is an arithmetic number, because the mean of its divisors is an integer number (80689374396).

Almost surely, 21313203123210 is an apocalyptic number.

1313203123210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1313203123210 is a deficient number, since it is larger than the sum of its proper divisors (1268856857462).

1313203123210 is a wasteful number, since it uses less digits than its factorization.

1313203123210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15771198.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1313203123210 its reverse (123213023131), we get a palindrome (1436416146341).

The spelling of 1313203123210 in words is "one trillion, three hundred thirteen billion, two hundred three million, one hundred twenty-three thousand, two hundred ten".

Divisors: 1 2 5 10 11 22 55 110 757 1514 3785 7570 8327 16654 41635 83270 15770423 31540846 78852115 157704230 173474653 346949306 867373265 1734746530 11938210211 23876420422 59691051055 119382102110 131320312321 262640624642 656601561605 1313203123210